Lub luag haujlwm ntawm ntau yam ntxiv hauv txhuas alloy

Silicon (si)
Silicon (si) yog cov khoom xyaw tseem ceeb rau kev txhim kho fluidity. Qhov zoo tshaj plaws fluidity tuaj yeem ua tiav los ntawm eutectic rau hypeutectic. Txawm li cas los xij, cov silicon (si) uas crystallizes yog tsim cov ntsiab lus nyuaj, ua kom cov khoom ua tsis zoo. Yog li ntawd, nws feem ntau tsis pub tshaj rau qhov siab dua Eutectic taw tes. Tsis tas li ntawd, silicon (si) tuaj yeem txhim kho tensile lub zog, hardness, txiav kev ua tau zoo, thiab lub zog ntawm kev kub ntxhov thaum txo kev sib tw.
Magnesium (MG)-magnesium alloy muaj qhov zoo tshaj plaws corrosion. Yog li ntawd, ADC5 thiab ADC6 yog corrosion-resistant alloys. Nws cov comoricification ntau yog heev loj heev, yog li nws muaj kub brittleness, thiab cov duab casting yog nquag mus tawg, ua cov khoom nyuaj. Magnesium (MG) raws li ib tug impurity nyob rau hauv al-cu-si cov ntaub ntawv, mg2si yuav ua rau comptrely nke, yog li tus qauv feem ntau tsis pub dhau 0.3%.

Hlau (FE) txawm hais tias hlau (FE) tuaj yeem nce cov txheej txheem ntawm cov roj av, cov hlau (FE) Cov hlau (fe) nqa los ntawm txhuas (al) muaj tsawg heev, thiab thaum hlau (FE) ntau dua li cov solubility txwv, nws yuav crystallize li Feal3. Cov yam tsis xws luag tshwm sim los ntawm FE feem ntau tsim slag thiab ntab raws li feal3 tebchaw. Lub casting yuav nkig, thiab tshuabsability tsis meej. Lub fluidity ntawm cov hlau cuam tshuam rau txoj kev smoontness ntawm lub cam khwb cia.
Impurities ntawm hlau (FE) yuav tsim lub npe-zoo li muaju ntawm Feal3. Txij li tuag-casting yog sai sai txias txias, cov muaj zog precipitated zoo heev thiab tsis tuaj yeem suav hais tias muaj kev ua phem. Yog tias cov ntsiab lus tsawg dua 0.7%, nws tsis yooj yim los daws, yog li cov hlau cov ntsiab lus ntawm 0.8-1.0% yog qhov zoo dua rau tuag-casting. Yog tias muaj cov hlau loj loj (FE), hlau sib txuas yuav tsim, tsim cov ntsiab lus nyuaj. Ntxiv mus, thaum hlau (FE) cov ntsiab lus ntau dua 1.2%, nws yuav txo cov fluting ntawm cov camloy, thiab luv lub neej ntawm cov hlau sib tsoo hauv cov khoom tuag.

Nickel (NI) zoo li tooj liab (Cu), muaj kev nyiam ua kom muaj zog thiab hardness, thiab nws muaj qhov cuam tshuam tseem ceeb ntawm corrosion tsis kam. Qee zaum, Nickel (NI) ntxiv rau kev txhim kho lub zog kub thiab kub ua rau corrosion tsis kam thiab thermal conductivity.

Manganese (MN) Nws tuaj yeem txhim kho lub zog siab-kub ntawm alloys muaj tooj liab (Cu) thiab silicon (si). Yog tias nws ntau tshaj qhov txwv tsis pub dhau los ua kom muaj cov lej al-si-p + o {t * t * t * t * t * t f n Manganese (MN) tuaj yeem tiv thaiv cov txheej txheem recrystallization ntawm alloys alloys, nce recrystallization txias, thiab ho ua kom zoo dua cov recrystallization grain. Lub tshuab ua kom zoo nkauj ntawm cov qoob loo recrystallization yog feem ntau vim yog cuam tshuam txog Mnal6 compound hais cov nplej ntawm cov nplej recrystallization nplej. Lwm qhov haujlwm ntawm Mnal6 yog kom yaj impurity hlau (FE) los tsim (FE, MN) AL6 thiab txo cov kev phom sij ntawm cov hlau. Manganese (MN) yog qhov tseem ceeb ntawm alloys thiab tuaj yeem ntxiv ua ib qho standalone al-mn binary alloy lossis ua ke nrog lwm yam alloying. Yog li ntawd, feem ntau aluminium alloys muaj mangorgese (mn).

Zinc (Zn)
Yog hais tias impure zinc (Zn) yog tam sim no, nws yuav ua rau muaj kev kub siab ntaus kub. Txawm li cas los xij, thaum ua ke nrog Mercury (Hg) los ua cov HGZN2 alloys, nws tsim cov nyhuv muaj zog. JIS stipulates hais tias cov ntsiab lus ntawm kev mob zinc (ZN) yuav tsum tsawg dua 1.0%, thaum cov qauv txawv teb chaws tuaj yeem tso cai rau 3%. Qhov kev sib tham no tsis yog xa mus rau zinc (ZN) raws li cov txheej txheem alloy tab sis theej nws lub luag haujlwm uas yog qhov ua rau cov kab nrib pleb hauv castings.

Chromium (cr)
Chromium (CR) cov ntawv sib xyaw ua ke xws li (Crmn) Al12 thiab (CRMN), kev loj hlob ntawm recrystallization thiab muab qee qhov muaj peev xwm ua tau zoo rau cov alloy. Nws kuj tseem tuaj yeem txhim kho lub alloy txoj kev nruj thiab txo cov kev ntxhov siab corrosion cracking rhiab rhiab. Txawm li cas los xij, nws tuaj yeem nce cov rhiab heev.

Titanium (ti)
Txawm hais tias ib qho me me ntawm titanium (ti) hauv alloy tuaj yeem txhim kho nws cov yam ntxwv, tab sis nws tseem tuaj yeem txo nws hluav taws xob conduction. Cov ntsiab lus tseem ceeb ntawm titanium (ti) hauv al-ti series alloys rau nag lossis daus puas tuaj yeem raug txo nrog kev sib ntxiv ntawm Boron.

Lead (PB), Tin (Sn), thiab Cadmium (CD)
Calcium (Ca), txhuas, txhuas, Tin (Sn), thiab lwm yam impurities yuav muaj nyob hauv txhuas alloys. Txij li cov ntsiab lus no muaj cov ntsiab lus sib txawv thiab cov qauv sib txawv, lawv tsim cov sib txawv sib xyaw nrog cov khoom sib txawv (al), ua rau sib txawv ntawm cov khoom ntawm txhuas alloys. Calcium (Ca) muaj cov solubility tsawg heev hauv txhuas thiab cov ntaub ntawv Caal4 nrog aluminium (al), uas tuaj yeem txhim kho kev ua tau zoo ntawm txhuas alloys. Lead (PB) thiab Tin (SN) yog tsawg-melting me me nrog cov khoom siv tsis tshua muaj zog ntawm cov alloy tab sis txhim kho nws cov kev txiav txim siab.

Kev nce qib (PB) cov ntsiab lus tuaj yeem txo qhov nyuaj ntawm zinc (zn) thiab nce nws solubility. Txawm li cas los xij, yog tias muaj txhuas ua (PB), Tin (Sn), lossis Cadmium (Cd) tshaj li tus nqi teev tseg hauv Aluminium, corrosion, corrosion yuav tshwm sim. Qhov kev txhim kho corrosation no tsis tu ncua, tshwm sim tom qab lub sijhawm ib ntus, thiab yog hais tshwj xeeb nyob rau hauv high-kub, high-vaum cua.